Base | Representation |
---|---|
bin | 100101010100100100… |
… | …0111101000110111001 |
3 | 21122212120220221121211 |
4 | 1022221020331012321 |
5 | 2303120124431111 |
6 | 100452530403121 |
7 | 5535056115502 |
oct | 1125110750671 |
9 | 248776827554 |
10 | 80147108281 |
11 | 30a98a53779 |
12 | 136491304a1 |
13 | 7733760736 |
14 | 3c4450dba9 |
15 | 214137b521 |
hex | 12a923d1b9 |
80147108281 has 32 divisors (see below), whose sum is σ = 87281556480. Its totient is φ = 73440729600.
The previous prime is 80147108273. The next prime is 80147108287. The reversal of 80147108281 is 18280174108.
It is a cyclic number.
It is not a de Polignac number, because 80147108281 - 23 = 80147108273 is a prime.
It is a super-2 number, since 2×801471082812 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (80147108287) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5896365 + ... + 5909941.
It is an arithmetic number, because the mean of its divisors is an integer number (2727548640).
Almost surely, 280147108281 is an apocalyptic number.
It is an amenable number.
80147108281 is a deficient number, since it is larger than the sum of its proper divisors (7134448199).
80147108281 is a wasteful number, since it uses less digits than its factorization.
80147108281 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13785.
The product of its (nonzero) digits is 28672, while the sum is 40.
The spelling of 80147108281 in words is "eighty billion, one hundred forty-seven million, one hundred eight thousand, two hundred eighty-one".
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